We all know about the introduction of the quartz watch and the impact that it had on the mechanical watch market. What many may not know is how the introduction of the quartz watch came about. Believe it or not, there are many landmark movements that were introduced over more than a decade that took the idea of an electronic watch from an unreliable and costly novelty to the cheap workhorse that we know today. The Tissot signed ESA Dynotron movement powering this watch is one of these landmark pieces. The Dynotron is widely credited as the first movement to employ a balance wheel and a transistor. Part mechanical, part electrical, and a time capsule for a very important moment in time that would be part of the catalyst for a huge change to come in the world of watches.
The 36mm stainless steel case is in very good condition. The case retains its original brushed finish on the top of the case and high polish on the case sides. The edges of the case and the coin style bezel are very sharp and in combination with the brushed and high polished areas lead us to believe that the watch is in unpolished condition. The signed crown and caseback are correct for the watch and thought to be original.
The Dial and Hands
The marine blue dial is in excellent condition. It features applied hour markers, date aperture at 3 o’clock, center sweep second hand, and a brushed silver contrasting minute track. Most interestingly on the dial are the applied hour markers, which are not in the more common polished steel but rather in a translucent material that looks like lucite or similar (very 70s). All of the components are correct and thought to be original.
This watch is powered by a 13 Jewel Electronic Tissot Cal. 431 ( 9154 ESA ) movement. The watch is running and the service history is unknown.
|Location||New York City|
|Movement||Electronic Tissot Cal. 431 ( 9154 ESA )|
|Dial||Blue and Silver|
|Case Material||Stainless Steel|
|Band Material||NATO Strap|